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WO2004003571A1 - Assemblage de capteurs et ensemble de capteurs, comprenant des cartes a circuit imprime empilees, ayant une fixation commune - Google Patents

Assemblage de capteurs et ensemble de capteurs, comprenant des cartes a circuit imprime empilees, ayant une fixation commune Download PDF

Info

Publication number
WO2004003571A1
WO2004003571A1 PCT/US2003/020374 US0320374W WO2004003571A1 WO 2004003571 A1 WO2004003571 A1 WO 2004003571A1 US 0320374 W US0320374 W US 0320374W WO 2004003571 A1 WO2004003571 A1 WO 2004003571A1
Authority
WO
WIPO (PCT)
Prior art keywords
printed circuit
circuit board
main
housing
sensor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2003/020374
Other languages
English (en)
Other versions
WO2004003571A8 (fr
Inventor
Jeffrey A. Clark
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Continental Automotive Systems Inc
Original Assignee
Siemens VDO Automotive Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens VDO Automotive Corp filed Critical Siemens VDO Automotive Corp
Priority to EP03742279A priority Critical patent/EP1523683A1/fr
Priority to JP2004518002A priority patent/JP2005531459A/ja
Publication of WO2004003571A1 publication Critical patent/WO2004003571A1/fr
Anticipated expiration legal-status Critical
Publication of WO2004003571A8 publication Critical patent/WO2004003571A8/fr
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
    • G01D11/24—Housings ; Casings for instruments
    • G01D11/245—Housings for sensors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P1/00—Details of instruments
    • G01P1/02—Housings
    • G01P1/023—Housings for acceleration measuring devices
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/14—Structural association of two or more printed circuits
    • H05K1/141—One or more single auxiliary printed circuits mounted on a main printed circuit, e.g. modules, adapters
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/09—Shape and layout
    • H05K2201/09818—Shape or layout details not covered by a single group of H05K2201/09009 - H05K2201/09809
    • H05K2201/0999—Circuit printed on or in housing, e.g. housing as PCB; Circuit printed on the case of a component; PCB affixed to housing
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10007—Types of components
    • H05K2201/10151—Sensor
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10431—Details of mounted components
    • H05K2201/10598—Means for fastening a component, a casing or a heat sink whereby a pressure is exerted on the component towards the PCB
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/20—Details of printed circuits not provided for in H05K2201/01 - H05K2201/10
    • H05K2201/2036—Permanent spacer or stand-off in a printed circuit or printed circuit assembly

Definitions

  • This invention relates to a method and apparatus for attaching a sensor assembly within a control unit that is used to deploy a safety restraint device.
  • Electronic control units for deploying safety restraint devices include a plurality of sensors and a printed circuit board, which interact with each other to control deployment of the safety restraint device under appropriate vehicle crash conditions.
  • a single printed circuit board is used to support all of the sensors.
  • the lateral and vertical acceleration sensors as well as the rollover sensors are all mounted to the same circuit board.
  • This mounting configuration has several disadvantages.
  • the size of the circuit board must be large enough to accommodate all of the sensors, in addition to their associated electronics. This takes up a significant amount of packaging space.
  • Another disadvantage is that this mounting configuration has a tendency to resonate at lower frequencies. This resonation can adversely affect sensor signals, resulting in measurement and signal conversion inaccuracies.
  • control unit and sensor assembly that allows the size of the printed circuit board to be decreased to provide a more compact unit, and which further eliminates inaccuracies caused by vibrations, as well as overcoming the other above mentioned deficiencies with the prior art.
  • a control unit for a safety restraint device includes a main printed circuit board that supports a first sensor and a secondary or auxiliary printed circuit board that supports a second sensor.
  • the main and auxiliary printed circuit boards are spaced apart from and are positioned in an overlapping relationship to each other within a housing.
  • a common attachment member is used to connect both the main and auxiliary printed circuit boards to the housing.
  • control unit and sensor assembly for a safety restraint device includes a housing, non-coplanar first and second printed circuit boards supported within the housing, and a fastener that attaches both printed circuit boards to the housing.
  • a rigid tubular member is positioned between the first and second printed circuit boards.
  • the rigid tubular member is aligned with first and second openings formed within the first and second printed circuit boards, respectively.
  • the fastener extends through the first and second openings, through the rigid tubular member, and has a distal end that is embedded within a wall of the housing.
  • the first printed circuit board comprises a main or primary printed circuit board and the second printed board comprises an auxiliary or secondary printed circuit board.
  • Acceleration sensors that measure lateral and/or vertical vehicle accelerations are preferably mounted on the main printed circuit board.
  • a rollover sensor assembly which measures a vehicle angular rate, is separated from the other sensors and is mounted to the auxiliary printed circuit board.
  • more than one fastener is used to attach the printed circuit boards to the housing.
  • each fastener is spaced apart from one another and each fastener extends through both the first and second printed circuit boards. Distal ends of the fasteners are embedded in a wall of the housing.
  • the subject method and apparatus provides a more compact control unit and sensor assembly for deploying a safety restraint device.
  • Figure 1 a schematic view of a vehicle system incorporating the subject invention.
  • Figure 2 is a cross-sectional view, partially cut away, of a vehicle system control unit incorporating the subject invention.
  • Figure 3 is a cross-sectional view taken along line 3-3 of Figure 2.
  • a control unit and sensor assembly measures and analyzes multiple vehicle characteristics to determine whether conditions are appropriate for deploying a safety restraint device 12.
  • the control unit and sensor assembly 10 includes plurality of sensors 14 that transmit signals to an electronic control and processing unit (ECU) 16.
  • the sensors 14 and ECU 16 are enclosed within a housing 18, which is mounted to a vehicle structure 20.
  • the ECU 16 monitors the sensor signal and generates an activation signal 22 when the ECU 16 determines that conditions are appropriate to activate the safety restraint device 12.
  • control unit and sensor assembly 10 is mounted near a vehicle width centerline. Also, the control unit and sensor assembly 10 is preferably positioned as close to a vehicle firewall as possible, such as within the center counsel area in the vehicle.
  • the control unit and sensor assembly 10 includes a primary or main printed circuit board 24 and a secondary or auxiliary printed circuit board 26.
  • the auxiliary printed circuit board 26 is non-coplanar with the main printed circuit board 24. As shown in Figure 2, the auxiliary printed circuit board 26 is spaced apart from and positioned in an overlapping relationship to the main printed circuit board 24.
  • the main printed circuit board 24 supports at least one sensor assembly 28, as well as supporting ECU associated electronics 30.
  • the auxiliary printed circuit board 26 supports at least one additional sensor assembly 32.
  • a pin connection 34 is used to electronically connect the auxiliary printed circuit board 26 to the main printed circuit board 24.
  • the sensor assembly 28 mounted on the main printed circuit board 24 includes acceleration sensors that measure lateral and/or longitudinal vehicle accelerations
  • the additional sensor assembly 32 supported on the auxiliary printed circuit board 26 includes a rollover sensor that measures an angular rollover or turning rate.
  • each of the sensor assemblies 28, 32 could be comprised of a single sensor or could be comprised of multiple sensors.
  • the auxiliary printed circuit board 26 could be configured to support lateral and vertical acceleration sensors in addition to, or in place of, the rollover sensors.
  • any associated sensor electronics 36 for the additional sensor assembly 32 are preferably mounted on the auxiliary printed circuit board 26.
  • the associated sensor electronics 36 or any additional sensors or sensor components 38 used to form the additional sensor assembly 32 can be positioned on an upper surface 40 or on a lower surface 42 of the auxiliary printed circuit board 26, depending upon packaging constraints.
  • At least one attachment member 44 is used to secure both the main 24 and auxiliary 26 printed circuit boards to the housing 18.
  • the attachment member 44 includes a body portion 46 that extends through both the main 24 and auxiliary 26 printed circuit boards.
  • a distal end 48 of the body portion 46 extends into or is embedded within a wall 50 of the housing 18.
  • a rigid tubular standoff or spacer 52 is positioned between the main 24 and auxiliary 26 printed circuit boards.
  • the spacer 52 includes a bore 54 through which the attachment member 44 is inserted.
  • a cover 56 is used to enclose the main 24 and auxiliary 26 printed circuit boards within the housing 18. The cover also provides a protected environment for the sensors 28, 32 and electronics 30, 36.
  • a first opening 58 is formed within the cover 56
  • a second opening 60 is formed within the main printed circuit board 24, and a third opening 62 is formed within the auxiliary printed circuit board 26.
  • the openings 56, 60, 62 are aligned with one another and with the bore 54 of the spacer 52.
  • the attachment member 44 is inserted through the first opening 58, through the second opening 60, through the bore 54, through the third opening 62 and into the housing wall 50.
  • the same attachment member 44 is inserted through the cover 56, main printed circuit board 24, the spacer 52, and the auxiliary printed circuit board 26.
  • the housing 18 includes a ledge 64 against which the auxiliary printed circuit board 26 abuts.
  • the third opening 62 in the auxiliary printed circuit board 26 is aligned with the ledge 62 such that the attachment member 44 can be inserted through the opening 62 and into the housing wall 50.
  • the attachment member 44 comprises at least two fasteners 44a and 44b as shown in Figure 3.
  • the fasteners 44a, 44b are preferably threaded fasteners that have distal ends 48a, 48b that are threaded into gripping engagement with the housing wall 50.
  • the fasteners 44a, 44b include body portions 46a, 46b that extend through the first openings 58a, 58b, through the second openings 60a, 60b, through the bores 54a, 54b of the rigid spacers 52a, 52b, through the third openings 62a, 62b, and into the housing wall 50.
  • both fasteners 44a, 44b are inserted through the cover 56, main printed circuit board 24, the spacer 52, and the auxiliary printed circuit board 26 to provide a secure and rigid attachment of the boards 24, 26 to the housing 18.
  • the determination of whether the single fastener mounting configuration can be used is based on system requirements and the specific module configuration.
  • This packaging and mounting configuration for the control unit and sensor assembly 10 provides several advantages.
  • the attachment members 44a, 44b provide solid attachment to the housing 18, which improves signal transfer to the rollover sensors in the additional sensor assembly 32.
  • the rollover sensors 32 are mounted on the auxiliary printed circuit board 26, the rollover sensors 32 are isolated from dynamic resonating input generated by the main printed circuit board 24. Also, the configuration minimizes the main printed circuit board space requirements for adding the rollover feature. Thus, additional space is provided on the main printed circuit board 24 for other electrical components.
  • Another advantage is that the size of the main printed circuit board 24 is standardized for different sensor configurations.
  • the rollover function is an optional content feature, and thus the rollover sensor and associated electronics are not always required.
  • the subject invention provides a compact unit size for modules with and without the rollover sensor feature by providing the same main printed circuit board size for both applications.
  • Another benefit is that the control unit and sensor assembly 10 is serviceable because the fasteners 44a, 44b can be easily removed and re-installed.
  • the length of the fasteners 44a, 44b can vary depending on the size of the control unit and sensor assembly 10, however, the fasteners 44a, 44b must be long enough to extend through the cover 56, main printed circuit board 24, spacer 52, auxiliary printed circuit board 26, and into the housing wall 50 to form a solid attachment.
  • this type of long fastener 44a, 44b eliminates the need for additional fasteners to secure the cover to the housing 18, etc. Thus, one fastening operation is used to secure multiple components to the housing 18. Further, this mounting configuration is flexible such that different auxiliary 26 and main 24 printed circuit board shapes and sizes are easily accommodated.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Air Bags (AREA)
  • Mounting Of Printed Circuit Boards And The Like (AREA)
  • Pressure Sensors (AREA)

Abstract

Cette unité de commande pour dispositif de retenue de sécurité comporte une carte à circuit imprimée principale prenant en charge des capteurs d'accélération latérale et verticale ainsi qu'une carte à circuit imprimé auxiliaire prenant en charge des capteurs de renversement. Ces cartes à circuit imprimé empilées, qui sont séparées l'une de l'autre, sont placées de manière à se chevaucher dans un boîtier. Une connexion à broche assure la connexion électrique entre ces cartes, afin de permettre des transferts de signaux entre elles. On utilise un système de fixation commun pour les assujettir à un boîtier. On utilise également un couvercle pour les enfermer dans ce boîtier. Le système de fixation se déploie sur le couvercle, les deux cartes et, enfin dans le boîtier.
PCT/US2003/020374 2002-06-28 2003-06-27 Assemblage de capteurs et ensemble de capteurs, comprenant des cartes a circuit imprime empilees, ayant une fixation commune Ceased WO2004003571A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP03742279A EP1523683A1 (fr) 2002-06-28 2003-06-27 Assemblage de capteurs et ensemble de capteurs, comprenant des cartes a circuit imprime empilees, ayant une fixation commune
JP2004518002A JP2005531459A (ja) 2002-06-28 2003-06-27 プリント基板を積重ねたセンサー組立体の共通固着手段による組立て

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US39214602P 2002-06-28 2002-06-28
US60/392,146 2002-06-28

Publications (2)

Publication Number Publication Date
WO2004003571A1 true WO2004003571A1 (fr) 2004-01-08
WO2004003571A8 WO2004003571A8 (fr) 2005-05-12

Family

ID=30000820

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2003/020374 Ceased WO2004003571A1 (fr) 2002-06-28 2003-06-27 Assemblage de capteurs et ensemble de capteurs, comprenant des cartes a circuit imprime empilees, ayant une fixation commune

Country Status (4)

Country Link
US (2) US6913472B2 (fr)
EP (1) EP1523683A1 (fr)
JP (1) JP2005531459A (fr)
WO (1) WO2004003571A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008043585A1 (fr) * 2006-10-09 2008-04-17 Continental Automotive Gmbh Module électronique pour commander un système de protection de personnes et/ou d'occupants d'un véhicule
RU2419777C2 (ru) * 2005-03-31 2011-05-27 С2 Диагностик Сосуд для оптического устройства для анализа крови, анализатор, оснащенный таким сосудом
DE102014216469A1 (de) 2014-08-20 2016-02-25 Continental Automotive Gmbh Steuergerät für ein Kraftfahrzeug mit einem ersten Leiterplattenabschnitt mit zumindest einem Sensorelement sowie einem zweiten, vom ersten mechanisch entkoppelten Leiterplattenabschnitt

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6913472B2 (en) * 2002-06-28 2005-07-05 Siemens Vdo Automotive Corporation Method and apparatus for attaching a sensor assembly in a control unit
DE102004034290A1 (de) * 2004-07-15 2007-01-11 Siemens Ag Sensor für Kraftfahrzeuge
JP2006226762A (ja) * 2005-02-16 2006-08-31 Mitsubishi Electric Corp ロールオーバセンシング装置
DE102006019250A1 (de) * 2006-04-26 2007-10-31 Robert Bosch Gmbh Elektronische Baueinheit
FR2906436B1 (fr) * 2006-09-21 2010-09-24 Jean Pierre Christian Gaston Choplet Entretoises specifiques non incrustees, montees flottantes sur circuit imprime avec entretoises creuses serrant deux capots blindes etanches permettant d'empiler les modules par vis
DE102007001407B4 (de) * 2007-01-09 2016-02-25 Continental Automotive Gmbh Montageanordnung zur Fixierung übereinander angeordneter Leiterplatten in einem Gehäuse
DE102007034769A1 (de) * 2007-07-25 2009-01-29 Autoliv Development Ab Bauteil für ein Sicherheitsgurtsystem mit einer elektronischen Steuereinheit
JP4724159B2 (ja) * 2007-07-26 2011-07-13 日信工業株式会社 電子制御ユニット及び車両挙動制御装置
JP4697311B2 (ja) * 2009-01-20 2011-06-08 株式会社デンソー 車載電子制御ユニット用筺体
US8387457B2 (en) * 2011-01-11 2013-03-05 Delphi Technologies, Inc. Collision sensor housing and module
DE102011080169A1 (de) * 2011-08-01 2013-02-07 Robert Bosch Gmbh Kommunikationsanbindung für Sensorik in Fahrzeug-Regelsystemen
US9961786B2 (en) * 2013-11-19 2018-05-01 Continental Automotive Systems, Inc. Method and structure for limiting cover deflection in an ECU when exposed to high altitude environments
DE102017204338A1 (de) 2017-03-15 2018-09-20 Robert Bosch Gmbh Elektronisches Steuermodul und Verfahren zum Herstellen eines elektronischen Steuermoduls
JP2019060817A (ja) * 2017-09-28 2019-04-18 日本特殊陶業株式会社 電子部品検査装置用配線基板
DE102018216166B3 (de) * 2018-09-21 2019-10-24 Siemens Aktiengesellschaft Messaufnehmer

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EP0427106A2 (fr) * 1989-11-07 1991-05-15 MARELLI AUTRONICA S.p.A. Système pour l'assemblage et la connexion de plaques de circuit imprimé à utiliser notamment dans les véhicules à moteur
WO1998012904A1 (fr) * 1996-09-19 1998-03-26 Siemens Aktiengesellschaft Dispositif de commande pour airbag
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US5933343A (en) * 1997-02-21 1999-08-03 International Power Devices, Inc. Multi-deck power converter module
DE19841258C1 (de) * 1998-09-09 2000-03-16 Siemens Ag Steuergerät

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US6684141B2 (en) * 2002-06-06 2004-01-27 Delphi Technologies, Inc. Electrical circuit module with magnetic detection of loose or detached state
US6913472B2 (en) * 2002-06-28 2005-07-05 Siemens Vdo Automotive Corporation Method and apparatus for attaching a sensor assembly in a control unit

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Publication number Priority date Publication date Assignee Title
US4922381A (en) * 1986-03-25 1990-05-01 Hughes Aircraft Company Stacked circuit cards and guided configurations
EP0427106A2 (fr) * 1989-11-07 1991-05-15 MARELLI AUTRONICA S.p.A. Système pour l'assemblage et la connexion de plaques de circuit imprimé à utiliser notamment dans les véhicules à moteur
WO1998012904A1 (fr) * 1996-09-19 1998-03-26 Siemens Aktiengesellschaft Dispositif de commande pour airbag
US5933343A (en) * 1997-02-21 1999-08-03 International Power Devices, Inc. Multi-deck power converter module
DE19709243C1 (de) * 1997-03-06 1998-06-10 Siemens Ag Steuergerät für ein Kraftfahrzeug
DE19841258C1 (de) * 1998-09-09 2000-03-16 Siemens Ag Steuergerät

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2419777C2 (ru) * 2005-03-31 2011-05-27 С2 Диагностик Сосуд для оптического устройства для анализа крови, анализатор, оснащенный таким сосудом
WO2008043585A1 (fr) * 2006-10-09 2008-04-17 Continental Automotive Gmbh Module électronique pour commander un système de protection de personnes et/ou d'occupants d'un véhicule
DE102014216469A1 (de) 2014-08-20 2016-02-25 Continental Automotive Gmbh Steuergerät für ein Kraftfahrzeug mit einem ersten Leiterplattenabschnitt mit zumindest einem Sensorelement sowie einem zweiten, vom ersten mechanisch entkoppelten Leiterplattenabschnitt

Also Published As

Publication number Publication date
US6913472B2 (en) 2005-07-05
WO2004003571A8 (fr) 2005-05-12
EP1523683A1 (fr) 2005-04-20
US20050146340A1 (en) 2005-07-07
JP2005531459A (ja) 2005-10-20
US20040000204A1 (en) 2004-01-01
US7147486B2 (en) 2006-12-12

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